.mfp-preloader {
  width: 30px;
  height: 30px;
  background-color: #FFF;
  opacity: 0.65;
  margin: 0 auto;
  -webkit-animation: rotateplane 1.2s infinite ease-in-out;
  animation: rotateplane 1.2s infinite ease-in-out;
}

@-webkit-keyframes rotateplane {
  0% {
    -webkit-transform: perspective(120px);
  }
  50% {
    -webkit-transform: perspective(120px) rotateY(180deg);
  }
  100% {
    -webkit-transform: perspective(120px) rotateY(180deg) rotateX(180deg);
  }
}
@keyframes rotateplane {
  0% {
    transform: perspective(120px) rotateX(0deg) rotateY(0deg);
  }
  50% {
    transform: perspective(120px) rotateX(-180.1deg) rotateY(0deg);
  }
  100% {
    transform: perspective(120px) rotateX(-180deg) rotateY(-179.9deg);
  }
}